Drill mounting



1962 E. CARLSON ETAL 3,057,416

DRILL MOUNTING Filed Sept. 12, 1960 2 Sheets-Sheet 1 INVENTORS EVERETT 6. OARLSON JOHN W. ADAMS THEIR ATTORNEY 1962 E. c. CARLSON ETAL 3,057,416

DRILL MOUNTING Filed Sept. 12, 1960 2 Sheets-Sheet 2 4 (3 54 225; 82 70 as K 58 68 f -v a C) 1: 35 o 52 9) 66 54 v FIG. 2 g) 54 INVENTORS EVERETT 6. CARLSON FIG. 3 JOHN w ADAMS THEI ATTORNEY United States Patent 3,057,416 DRILL MOUNTING Everett C. Carlson and John W. Adams,

N.J., assignors to Ingersoll-Rand Company, N.Y., a corporation of New Jersey Filed Sept. 12, 1960, Ser. No. 55,341 6 Claims. (Cl. 175-125) Phillipsburg, New York,

vdrilling of a complete round of blast holes of great depth and accurately parallel to each other for sinking shafts, raises, stopes and the like in underground operations.

The invention will be more clearly understood by reference to the following description taken with the drawing of which- FIGURE 1 is an elevation of a drill mounting constructed in accordance with the practice of the invention and showing the manner in which the mounting is intended to be set up in a tunnel or drift on or under the ground;

FIG. 2 is a sectional view taken along the line 2-2 looking in the direction of the arrows and indicating the pattern of blast holes which are possible with the mounting of the invention;

FIG. 3 is a cross section along the line 3-3 looking in the direction of the arrows; and

FIG. 4 is a cross section along the line 4-4 looking in the direction of the arrows.

Referring to the drawings, the main support of the mounting is provided by a column adjustable as to length so as to engage the floor 12 of a tunnel, shaft or other underground working and the roof 14. For this purpose, column 10 is mounted on a foot piece 16 adapted to fit in a previously drilled hole in the floor and a jackscrew 18 having spurred end 20 fitting into a previously drilled hole in the roof 14. Inasmuch as jackscrew 18 is non-rotatable, column '10 which is threaded to engage jackscrew 18 is adapted to be turned from the bottom end and therefore has a pivotal bearing 22 on foot piece 16. For engagement with an implement, such as a pipe or bar (not shown), reinforced holes 24 are provided near the lower end of column 10, by which that column is turned with respect to jackscrew 18 to thereby wedge the column between the floor and roof 12 and 14, respectively.

On column .10, between spaced apart flanges 26, is provided a tubular member 28 adapted to rotate freely on column 10. A pair of laterally extending arms 36 and 32 is mounted on tubular member 28 and fastened to the tubular member by welding or by some other suitable means. At the distal end, arms 30 and 32 are provided with bearings 34 and 36, respectively, in alignment with each other and adapted to receive a vertical member or post 38 which is free to rotate in bearings 34 and 36. Sagging of the structure, thus formed, is avoided by a diagonal strut 40 which is attached to tubular member 28 near its upper end and to arm 30 at bearing 34. Intermediate the ends of post 38 and preferably close to bearings 34 and 36 is provided a pair of laterally extending arms 42 and 44, preferably of the same length and, in this instance, each having a flat terminal face 46 to engage the back flange of a drill guide 48.

Drill guide 48 is a structure which is adapted to support a drill 50 of a type suitable to drill long holes in the floor 12. Details of drill 50 are not important to the description of this invention so far as the type of drill concerned. It may be a rotary or a percussive type of "ice drill. In the drawing, a rotary type of drill is indicated which is adapted to turn a drill rod 52 which is shown extending into a drill hole 54 in floor 12.

In this instance, drill guide 48 is constructed of an I- beam, as indicated in FIG. 2, of which one flange 56 is mounted on flat face 46 of arms 42 and 44 by means of clamping plates 58 and bolts 60. The opposite flange 62 of the 'l-beam provides a surface for drill 50 to slide on. To provide sliding engagement between flange 62 and drill 50, drill 50 is provided with blocks 64 and plates 66 which are disposed to embrace flange 62, suitable bolts 68 being provided as a means to hold blocks 64 and plates 66 together in a sliding fit with flange 62. Mounted on plates 66 is a pair of feed cylinders 70 which cooperate with stationary plungers 72 supported at the upper end of guide 48. Hydraulic pressure in cylinders 70 is adapted to advance and retract drill 50. At the lower end of drill guide 48 is provided a toothed foot 74 to engage floor 12, and aligned therewith, at the upper end of guide 48, is a second toothed foot 76 to engage roof 14. To provide engagement of toothed feet 74 and 76 with the fio or 12 and roof 14, respectively, a cylinder 78 is mounted on guide 48 in longitudinal relationship with the guide, which cylinder contains a piston plunger 80 upon which foot 76 is mounted.

Pressure within cylinder 78 which may be provided by pneumatic or hydraulic fluid maintains drill guide 48 rigidly in position.

As indicated in FIG. 2, the structure consisting of tubular member 28 and arms 30 and 32 is angularly swingable with respect to the arm structure provided by post 38 and arms 42 and 44, providing feet 74 and 76 are disengaged from the floor and roof, respectively. Means to adjust such angularity is provided in the form of a screw 82 which is mounted on a pin 84, at one end supported on member 32 by a tubular bearing 86, and at its other engaging a pin 88 in a tubular bearing 90 in arm 44. At one end of screw rod 82 is provided a squared portion 92 to receive a suitable turning mechanism (not shown) such as a wrench. Engagement of screw 82 with pin 84 is achieved by a thread so that the turning of screw 82 draws members 32 and 44 together or forces the members apart depending upon the direction of turning.

Toward the lower portion of guide 48 is mounted a suitable centralizer 94 having wearing blocks 96 to guide rod 52. Also for disengaging rod sections, a suitable automatic Wrench 98 is mounted on a bracket 100 which is supported on guide 48.

The construction, above described, permits the placing of holes 54 in a great variety of locations with a single setting of column 10. As indicated in 52, the pattern may be circular with a fixed angularity of the arm structures with respect to each other. All that is required is to release the foot 76, raise and lock drill guide 48, including toothed foot 74, and to swing drill guide 48 about the center of column 10. If holes are desired to be drilled within that circular pattern, drawing up on the adjusting screw 82 will pull drill 50 closer to the center of column 10, and other inner holes may be placed.

While this construction has been described as one drilling vertical holes, it is understood, of course, that within the meaning of this term are included holes drilled at some slight angle, in which case the foot piece 16 and the jackscrew 18 would be positioned off the vertical. With this mechanism such an arrangement is possible since drill guide 48 is slidable on members 42 and 44, as above described, and there is no difliculty of clamping drill guide 48 rigidly in such position by means of feet 74 and 76.

Thus, by the above construction, are accomplished, among others, the objects hereinbefore referred to.

on said slide to fix the position thereof, and means to adjust and maintain the angularity of said arm structures with respect to each other.

2. A drill mounting comprising a vertical support column adjustable to engage the floor and roof of a tunnel, an arm structure mounted horizontally rotatable on said column, a second arm structure mounted horizontally rotatable on the first arm structure, a drill receiving slide vertically supported on said second arm structure, roof and floor engaging means on said slide to fix the position thereof, and means to adjust and maintain the angularity of said arm structures with respect to each other.

3. A drill mounting comprising a vertical support column adjustable to engage the floor and roof of a tunnel, an arm structure mounted on and horizontally rotatable on said column, a second arm structure mounted on and horizontally rotatable on the first arm structure, a drill receiving slide vertically supported on said second arm structure, roof and floor engaging means on said slide to fix the position thereof, means to adjust and maintain the angularity of said arm structures with respect to each other, a carriage on said side adapted to receive a drill, and feed means to move said carriage on said slide.

4. A drill mounting comprising a vertical support column of adjustable length to engage the floor and roof of a tunnel and the like, a tubular member rotatable on said column, arms extending from said tubular member and forming therewith a supporting arm structure, a vertical member rotatably supported by said arms, a pair of laterally extending members carried by said vertical member, a drill receiving slide vertically supported on the ends of said laterally extending members, roof and floor engaging means on said slide to fix the position thereof, and means to adjust and maintain the angularity of said laterally extending members with respect to said arms.

5. A drill mounting comprising a vertical support column having a foot and rotatable thereon, a spurred ground engaging jackscrew at the end of said column opposite the foot, a tubular member concentric with the column and rotatable thereon, a pair of laterally extending arms attached to said tubular member and having aligned bearings at their ends, a vertical member rotatably mounted in said bearings and having laterally extending members, a drill guide detachably supported on said lateral members, and adjustable means to fix the angularity of said lateral members with respect to said arms.

6. A drill mounting comprising a vertical support column having a foot and rotatable thereon, a spurred ground engaging jackscrew at the end of said column opposite the foot, a tubular member concentric With the column and rotatable thereon, a pair of laterally extending arms attached to said tubular member and having aligned bearings at their ends, a vertical member rotatably mounted in said bearings and having laterally extending members, a vertical drill guide detachably supported on said lateral members, means to fix the angular adjustment of said lateral members with respect to said arms, and fluid actuated ground engaging means on said guide to maintain the positioning of said guide.

References Cited in the file of this patent UNITED STATES PATENTS 1,289,219 Marsh Dec. 31, 1918 1,374,590 Levin Apr. 12, 1921 2,296,817 Gartin Sept. 22, 1942 2,318,595 Curtis May 11, 1943 2,321,949 Sorensen June 15, 1943 

